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The Cannon-Washburn Hunger Experiment was conducted in 1912 by American physiologist Walter Cannon and his colleague, graduate student A.L. Washburn. This experiment investigated the physiological mechanisms of hunger by examining the relationship between stomach contractions and the sensation of hunger.
Walter Cannon began his career in science as a Harvard undergraduate in the year 1892. Henry Pickering Bowditch, who had worked with Claude Bernard, directed the laboratory in physiology at Harvard. Here Cannon began his research: he used the newly discovered x-rays to study the mechanism of swallowing and the motility of the stomach.
Washburn's equation is also used commonly to determine the contact angle of a liquid to a powder using a force tensiometer. [ 5 ] In the case of porous materials, many issues have been raised both about the physical meaning of the calculated pore radius r {\displaystyle r} [ 6 ] and the real possibility to use this equation for the calculation ...
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Cannon summarises the observations that serve as the basis for his theory of emotion which claims the thalamic region is the coordinating center for emotional reactions. [14] First, after the removal of the cerebrum anterior to the thalamus in animal test subjects, the animals continue to display rage-like emotional responses.
Margaret Floy Washburn (July 25, 1871 – October 29, 1939), was a leading American psychologist in the early 20th century, was best known for her experimental work in animal behavior and motor theory development.
Charles Haldat made some penetrating criticisms of the reproducibility of Rumford's results [15] and it is possible to see the whole experiment as somewhat tendentious. [16] However, the experiment inspired the work of James Prescott Joule in the 1840s. Joule's more exact measurements were pivotal in establishing the kinetic theory at the ...
The experiment became a popular way to illustrate the principles of air pressure, and many smaller copies of the hemispheres were made, and are used to this day in science classes. Reenactments of von Guericke's experiment of 1654 are performed in locations around the world by the Otto von Guericke Society.